/Engine/Source/Runtime/Engine/Classes/Engine/Canvas.h
Draws a graph comparing 2 variables. Useful for visual debugging and tweaking.
virtual void DrawDebugGraph ( const [FString](API\Runtime\Core\Containers\FString) & Title, float ValueX, float ValueY, float UL_X, float UL_Y, float W, float H, FVector2D RangeX, FVector2D RangeY )